Front

Who edited the Periodic Table and arranged elements in increased atomic number?

Back

Moseley

Front

Who created the Periodic Table and arranged elements in increasing atomic mass?

Back

Mendeleev

Front

What is the name of the elements that are unreactive and have a full octet?

Back

Noble Gases

Front

Elements in the same group or family have _____________.

Back

the same number of valence electrons and similar properties

Front

What is the name of Group 1 elements?

Back

Alkali Metals

Front

What are the elements in Group 17 known as?

Back

Halogens

Front

What is the term for the horizontal rows in the Periodic Table?

Back

Periods

Front

What do elements in the same period have in common?

Back

They have the same number of electron shells.

Front

What is the general trend of atomic radius across a period?

Back

Atomic radius decreases from left to right.

Front

What is the general trend of electronegativity down a group?

Back

Electronegativity decreases down a group.